螺孔尺寸标准（课堂PPT）

1、1螺孔尺寸標准?參考資料 (1)機械設計標准 (2)JIS標准整理方林順2001.10.112 一名詞解釋 JIS公制螺絲以M表示。如M3。 JIS公制惠氏(WHITWORTH)粗牙以W表示。如W2W2 1/4 UNF美英統一制細牙螺絲。#6-40UNF. NF美國細牙螺絲。 UNC美英統一制粗牙螺絲。如#6-32UNC. UC美國粗牙螺絲 NEF美國特細牙。 TR公制梯形螺絲(30度).如TR120*22 TW公制梯形螺絲(29度)。如TW10 G電線管螺絲。如G16 PT管用推撥螺絲如PT1PT123二公制等級與番號對應表4100%90%80%70%0.2540.860.870.890.9

2、0.230.890.90.910.920.2540.960.970.9910.230.9911.011.020.2541.061.071.091.10.231.091.11.111.120.341.231.251.261.280.231.291.31.311.320.3541.41.421.441.460.231.491.51.511.520.3541.51.521.541.560.241.591.61.611.620.3541.61.621.641.660.231.691.71.711.720.441.771.81.821.840.2541.861.871.891.910.4541.941.

3、9722.020.2542.062.072.092.10.442.072.12.122.140.2542.162.172.192.20.4542.242.272.32.320.3542.32.322.342.36M2.5M1.4M1.6M1.7M1.8M2M2.2M2.3M1M1.1M1.2下穴怪(MM)公制牙孔攻牙前孔徑精度表名稱 螺紋距2級用精度番號100%90%80%70%1.2578.298.368.438.5178.438.498.558.60.7578.578.628.668.70.568.728.748.778.81.579.159.239.329.41.2579.299.369

4、.439.5179.439.499.559.60.7579.579.629.669.70.569.729.749.79.81.51010.1510.2310.3210.41810.4310.4910.5510.60.75810.5710.6210.6610.71.75811.0111.1111.2111.311.5811.1511.2311.3211.41.25811.2911.3611.4311.51811.4311.4911.5511.621012.8712.9813.0913.211.5913.1513.2313.3213.41.25813.2913.3613.4313.51813.43

5、13.4913.5513.61.5914.1514.2314.3214.41814.4314.4914.5514.6名稱 螺紋距2級用精度番號公制牙孔攻牙前孔徑精度表下穴怪(MM)M9M10M11M12M13M15三公制牙孔攻牙前孔徑精度表(1)50.4542.342.372.742.420.3552.42.422.442.460.652.662.692.732.760.552.7522.742.772.80.3552.82.822.842.860.653.163.193.233.260.3553.33.3236.343.360.7563.573.623.663.70.763.63.643.6

6、83.720.563.723.743.773.80.7564.074.124.164.20.564.224.244.274.30.964.494.544.594.640.864.554.594.644.680.564.724.744.774.80.964.995.045.095.140.565.225.245.275.3175.435.495.555.60.7565.575.625.665.70.565.725.745.775.8176.436.496.556.60.7566.576.626.666.70.566.726.746.776.81.2577.297.367.437.5177.437

7、.497.557.60.7577.577.627.667.767.727.747.777.8M7M8M4.5M5M5.5M6M2.6M3M3.5M421014.8714.9815.0915.211.5915.1515.2315.3215.41815.4315.4915.5515.61.51116.1516.2316.3216.41916.4316.4916.5516.62.51116.5816.7216.8717.0121116.8719.9817.0917.211.51017.1517.2317.3217.41917.4317.4917.5517.62.51118.5818.7218.871

8、9.0121118.8718.9819.0919.211.51019.1519.2319.3219.41919.4319.4919.5519.62.51120.5820.7220.8721.0121120.8720.9821.0921.211.51021.1521.2321.3221.41921.4321.4921.5521.621122.8722.9823.0923.211.51023.1523.2323.3223.41923.4323.4923.5523.6M18M20M22M24M16M17三公制牙孔攻牙前孔徑精度表(2)6四英制牙孔攻牙前孔徑精度表100%90%80%70%N0.1-6

9、4UNC41.631.651.671.7N0.2-5641.931.951.982N0.3-4842.212.242.272.3N0.4-40UNC52.492.522.562.59NO.5-4052.822.852.892.92NO.6-3253.053.13.143.19NO.8-32UNC63.723.763.813.85N0.10-2464.234.294.354.41N0.12-2464.894.955.015.071/4-20UNC65.635.75.775.855/16-1877.147.227.37.383/8-1678.628.718.88.897/16-14UNC810.0

10、810.1910.2910.391/2-13811.5911.711.8111.929/16-121013.0913.2113.3313.455/8-11UNC1114.5514.6814.8114.943/4-101217.6117.7517.918.04英制牙孔攻牙前孔徑精度表名稱2B級用精度番號下穴怪(MM)100%90%80%70%N0.0-80UNF31.341.361.381.4N0.1-7241.651.671.691.71N0.2-6441.961.9822.03N0.3-56UNF42.262.282.312.34NO.4-4852.542.572.62.63NO.5-445

11、2.852.882.912.95NO.6-40UNF53.153.1893.223.25N0.10-2463.773.813.853.89N0.12-2464.384.424.474.51NO.12-28UNF64.975.025.075.131/4-2865.845.895.945.995/16-2477.347.47.467.523/8-24UNF78.928.989.049.17/16-20810.3910.4610.5410.611/2-20811.9812.05612.1212.29/16-18UNF913.4913.5713.6513.735/8-18915.0615.1415.2

12、215.33/4-161018.1518.2418.3318.427/8-141121.221.321.421.5英制牙孔攻牙前孔徑精度表名稱2B級用精度番號下穴怪(MM)7五公制惠氏牙孔攻牙為孔徑精度表100%90%80%70%W 1/6-6041.331.351.381.43/32-4842.052.092.122.151/8-4052.782.822.862.9W 5/32-3263.483.533.583.623/16-2464.114.174.244.37/32-2464.94.975.035.1W 1/4-2065.565.645.725.85/16-1877.067.157.24

13、7.333/8-1688.548.648.748.84W 7/16-1489.9910.110.2110.331/2-12911.3911.5211.6511.789/16-12912.9813.1113.2413.37W 5/8-11914.4414.5914.7314.872003/4/10917.4817.6317.7917.59分制惠氏牙孔為孔徑精度表名稱2B級用精度番下穴怪(MM)8六攻牙后螺孔徑尺寸要求表(1)規格(UNF)標准徑最大最小番攻牙外徑No.0-80(1.524)1.251.3051.182NO.1-72(1.854)1.551.6121.424NO.2-64 (2.1

14、84)1.851.9121.756NO.3-56(2.515)2.12.1972.025NO.4-48(2.845)2.42.4582.271NO.5-44(3.175)2.72.742.551NO.6-40(3.505)2.93.0222.82NO.8-36(4.166)3.53.6063.404NO.10-32(4.826)4.14.1653.963NO.12-28(5.846)4.64.7244.4961/4-285.55.5885.365/16-246.97.0356.7823/8-248.58.6368.3827/16-209.910.0339.7291/2-2011.511.607

15、11.3299/16-1812.913.08112.7515/8-1814.514.68114.3513/4-1617.517.67817.3232007/8/1420.520.67520.271-1223.223.57123.1141 1/3-1226.526.74626.2891 1/4-1229.529.92129.4641 3/3-1232.833.09632.6391 1/2-123636.27135.814攻牙后螺孔徑尺寸按式表2級牙鑽孔徑RH-14.5.6RH7.8RH-9M1.00.250.860.88/M1.10.250.960.98/M1.20.251.061.08/M1.

16、40.231.241.25/M1.60.351.41.43/M1.70.351.511.53/M1.80.351.611.63/M2.00.41.781.8/M2.20.451.951.98/M2.30.42.082.1/M2.50.452.252.28/M2.60.452.352.38/M3.00.52.732.75/M3.50.63.173.2/M4.00.73.623.653.69m5.00.84.564.64.64M61.05.455.55.55M7.01.06.456.56.55M8.01.257.317.387.44M101.59.189.259.32M101.259.319.38

17、9.44M121.7511.041.1211.21M121.2511.3111.3811.44精度等級規格9六攻牙后螺孔徑尺寸要求表(2)規格(UNEF)標准徑最大最小NO.12-324.74.8264.6231/4-325.65.695.4865/16-327.17.2647.0873/8-328.78.8658.6617/16-2810.210.33810.1351/2-2811.811.93811.7099/16-2413.213.38613.0325/8-2414.814.98614.7323/4-2017.817.95817.6787/8-202121.13320.3531-2024

18、24.30824.028攻牙后螺孔徑尺寸按式表2級牙鑽孔徑規格(UNC)標准徑最大最小番數牙外徑NO.1-64(1.854)1.551.5821.425NO.2-56(2.184)1.81.8711.695NO.3-48(5.515)2.12.1461.941NO.4-40(2.845)2.32.3852.157NO.5-40(3.175)2.62.6972.487NO.6-32(3.505)2.82.8952.642NO.8-32(4.166)3.43.533.302NO.10-3.93.99623.683NO.12-4.54.5974.3441/4-205.15.2574.9795/16-186.66.7316.4013/8-1688.1537.7987/16-149.49.559.1441/2-1310.811.02310.5929/16-1212.212.44611.9895/8-1113.612.86813.3863/4-1016.516.8416.3077/8-919.519.76119.1772001/1/822.222.60621.9711 1/8-72525.34924.